that point in the process of setting up a guitar - positioning the saddle, adjusting the neck angle, etc. - where the builder feels that the instrument will function at its optimal level; a Taylor guitar's "sweet spot" has a neck angle set steep enough to neutralize (as much as possible) the tug of the string tension on the neck and body, but not so steep as to create problems associated with low action.
the precise point on a clubhead where contact with the ball feels best; by definition, this is a spot and not a large area as stated in many ads from golf equipment companies; a claim for a larger sweet spot probably means only this: that offcenter hits are more forgiving because of perimeter weighting and modern weight distribution.
This is that mysterious and perfect area on your bat where home runs begin their flight…where maximum carry can be assumed! When hit here, it just sounds and feels right. Want to test where it is on your own bat? Hold your bat about 6-8 inches up the handle and tap the barrel with a second bat (hopefully wood), beginning at your bat's trademark. Work your way up the barrel until you reach that place where your hands feel no vibration. Listen and feel. Close your eyes. You will recognize that sound when you become old. That's the perfect spot… That's the Sweet Spot
The so-called "best" listening (or viewing) position for enjoying an audio (or audio-video) system. Usually, it is centered between the main speakers and about as far from their connecting axis as they are from each other. Sweet-spot listening is mandatory for good imaging with systems that employ only two speakers up front. See also Center channel
that area defined by limitations of depth of field and focal distance relative to a lens' strength and design; the greater the strength of the lens, the shorter the focal distance and the more confining the depth of field; the greater the strength of the lens the more important design features become (to find your lenses' sweet spot hold your reading material in front of you and look through the lower part of your lenses, now slowly move the text toward you, and when it comes into focus you have found the sweet spot).
The point on the clubface where, if it is struck with an object, the clubface will not torque or twist to either side. (To find the sweet spot on his putter, he held the grip with his thumb and forefinger and let it hang vertically. Then he tapped the face of the putter with the eraser-end of a pencil until the putter head moved back without any torquing or twisting).
A sweet spot is a place, often numerical as opposed to physical, where a combination of factors suggest a particularly suitable solution. When used in the context of a racquet, bat or similar sporting instrument, sweet spot is often believed to be the same as the center of percussion.